-Dante Alighieri; Divine Comedy; illustrated by Sandro Botticelli; 1481. Beginning of the book (D閎ut de la Divine Com閐ie)The Vatican Apostolic Library is located inside the Vatican Palace and is entered via the Belvedere Courtyard. Pope Nicholas V (1447-1455) is credited with having founded the library. Enriched by important donations; bequests and acquisitions under the pontificates of Leo XIII and Pius XI; the Library contains an enormous amount of books; manuscripts; incunabula and prints. It also runs the Vatican School of Library Science.In 1587 Pope Sixtus V commissioned the architect Domenico Fontana to build a new; larger library; which stands today. The top floor of the building is occupied by the Sistine Hall; which is now part of the Vatican Museums.2010